Side entry coil induction heater with flux concentrator

Details Side entry coil induction heater with flux concentrator Side entry coil induction heater with flux concentrator

1995-01-27

1997-05-20

Leung, Philip H.

Electric heating

Inductive heating

With power supply system

219672, 219674, 219637, H05B 640

Patent

active

056309589

ABSTRACT:
An induction heater for heating a portion of a load comprises a side entry coil driven by a source of alternating current, with a flux concentrator located at the coil opening. The coil produces a magnetic field in the region occupied by the flux concentrator and the heated portion of the load. The flux concentrator extends along the opening of the coil and is fabricated of high permeability, low loss material, such as nickel-zinc ferrite, so as to enhance the uniformity of the magnetic field generated within the coil. In the preferred application, heating produces a complete fluid block in a cable section within the coil without overheating or damaging the cable.

REFERENCES:
patent: 3397295 (1968-08-01), Hale
patent: 3725629 (1973-04-01), Vickers
patent: 3842234 (1974-10-01), Seyfried
patent: 4100387 (1978-07-01), Reinke
patent: 4363946 (1982-12-01), Busemann
patent: 4549057 (1985-10-01), Anderson
patent: 4694134 (1987-09-01), Ross
patent: 4857687 (1989-08-01), Andersson et al.
patent: 5208443 (1993-05-01), McGaffigan
patent: 5231267 (1993-07-01), McGaffigan
patent: 5317121 (1994-05-01), Katayama et al.

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